APA (7th ed.) Citation

Hearn, P. (1990). The sky people : a history of parachuting / Peter Hearn: A history of parachuting. Airlife.

Chicago Style (17th ed.) Citation

Hearn, Peter. The Sky People : A History of Parachuting / Peter Hearn: A History of Parachuting. Shrewsbury: Airlife, 1990.

MLA (9th ed.) Citation

Hearn, Peter. The Sky People : A History of Parachuting / Peter Hearn: A History of Parachuting. Airlife, 1990.

Warning: These citations may not always be 100% accurate.